(a) Ammonia is found in many household products such as window cleaners. What is its nature? What is the colour change of a litmus paper when it is dipped in ammonia solution?

(b) Blue litmus paper is dipped in a solution. It remains blue. What is the nature of the solution? Explain. [2 MARKS]

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Solution

Each part: 1 Mark

(a) Ammonia turns red litmus blue so it is basic in nature.

(b) If blue litmus paper is dipped in a solution and it would remain blue then the solution may be basic or neutral in character.

Blue litmus paper does not change its colour with basic solution and neutral solution.

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Ammonia is found in many household products, such as window cleaners. It turns red litmus blue. What is its nature?

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. Explain why factory waste should be neutralized before disposing it into the water bodies?

. Ammonia is found in many household products, such as window cleaners. It turns red litmus blue. What is its nature?

1. Blue litmus paper is dipped in a solution. It remains blue. What is the nature of the solution? Explain.

2. Factory waste is neutralised before disposing it into the water bodies. Why?

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